Article
Microbiology
Penka Petrova, Alexander Arsov, Ivan Ivanov, Lidia Tsigoriyna, Kaloyan Petrov
Summary: Bacillus licheniformis 24 produces EPSs with different sugar compositions based on the substrate, and higher yields were obtained in batch and fed-batch processes in a fermenter at specific conditions. EPS2 exhibited stronger antioxidant activity than EPS1, and both EPSs were only produced during the exponential growth phase.
Article
Engineering, Marine
Vincenzo Zammuto, Eleonora Agostino, Angela Macri, Antonio Spano, Emanuela Grillo, Marco Sebastiano Nicolo, Concetta Gugliandolo
Summary: EPS and BS produced by marine Bacillus licheniformis have different effects on bacterial adhesion and biofilm disruption. The combination of these two exopolymers showed synergistic effects and effectively reduced the attachment and biofilm formation of Pseudomonas aeruginosa and Staphylococcus aureus on various surfaces.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Annadurai Vinothkanna, Ganesan Sathiyanarayanan, Perumalsamy Balaji, Krishnamurthy Mathivanan, Arivalagan Pugazhendhi, Yongkun Ma, Soundarapandian Sekar, Ramasamy Thirumurugan
Summary: The study extracted an exopolysaccharide (EPS) from the polyherbal fermented traditional medicine of Indian Ayurveda, showing its heteropolymeric nature consisting of typical monomeric units. The purification process confirmed the presence of characteristic carbohydrate polymer functional groups and structural units. The purified EPS exhibited excellent flocculation and emulsification activities, as well as strong antioxidant and cytotoxic activities against lung carcinoma cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Food Science & Technology
Xiaomeng Wang, Juanjuan Tian, Xueliang Zhang, Nanyu Tang, Xin Rui, Qiuqin Zhang, Mingsheng Dong, Wei Li
Summary: This study isolated two exopolysaccharide fractions from Lacticaseibacillus paracasei GL1, which had high molecular weights and thermal stability. These fractions were found to exert immunomodulatory effects.
Article
Chemistry, Applied
Shiming Zhu, Jin Han, Zhichao Yan, Yuze Wu, Wenqing Zhang, Wei Xia, Huafeng Feng
Summary: A novel exopolysaccharide (BD0.4) was purified from Paenibacillus bovis sp. nov BD3526 in wheat bran medium. The structure analysis revealed its composition and branching structure. BD0.4 exhibited enhanced phagocytic ability of macrophages and stimulated the secretion of immune factors from immune cells, possibly through the NF-kappa B signaling pathway.
CARBOHYDRATE POLYMERS
(2022)
Article
Agriculture, Multidisciplinary
Chengxu Cao, Yuanyuan Bian, Weihe Cang, Junrui Wu, Rina Wu
Summary: This study isolated a fraction of released exopolysaccharide (rEPS) from Bacillus velezensis SN-1 and characterized it. The results showed that rEPS-2 has hepatoprotective effects and can enhance antioxidant capacity by regulating the expression of antioxidant genes and activating antioxidant enzymes. Furthermore, rEPS-2 can influence and modulate the gut microbiota of mice with liver injury caused by carbon tetrachloride (CCl4).
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agricultural Engineering
Yustina M. Pusparizkita, Christian Aslan, Wolfgang W. Schmahl, Hary Devianto, Ardiyan Harimawan, Tjandra Setiadi, Yan Jer Ng, Athanasius P. Bayuseno, Pau Loke Show
Summary: Microbiologically influenced corrosion (MIC) is a destructive phenomenon that can occur in diesel mixture storage tanks, particularly due to the presence of biodiesel. The study identified the bacteria responsible for MIC and found that B. licheniformis can produce gamma-polyglutamate as a corrosion inhibitor. This suggests that B. licheniformis-mediated biocorrosion may promote the use of biodiesel as an environmentally friendly biofuel.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Kinithi M. K. Wickramaratne, Farshid Ramezanipour
Summary: The effect of oxygen-vacancies on functional properties is demonstrated through the investigation of LaCa2-Fe2GaO8, which has a perovskite-related structure, where oxygen-vacancies appear in every third layer, converting the octahedral coordination into tetrahedral. The vacancy-ordered LaCa2Fe2GaO8 shows better electro-catalytic performance and faster HER kinetics than La3Fe2GaO9, indicating an improved structure-activity relationship due to the ordered arrangement of oxygen-vacancies. The enhanced electrical charge-transport properties of LaCa2Fe2GaO8 are also observed in a wide range of temperatures.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Applied
Usha Lakra, Vivek Lincoln Singh Munda, Vinod Kumar Nigam, Shubha Rani Sharma
Summary: This study reports the production, characterization, and biological properties of exopolysaccharide (EPS) from a thermophilic bacterium, Bacillus licheniformis. The EPS exhibited antioxidant property, water-holding capacity (WHC), and high solubility. Analysis techniques such as FESEM, FTIR, EDX, and ICP-MS were utilized to characterize the EPS. The findings provide valuable resources for exploration in the pharmaceutical and agriculture industries.
NATURAL PRODUCT RESEARCH
(2023)
Article
Chemistry, Medicinal
Vincenzo Zammuto, Antonio Spano, Eleonora Agostino, Angela Macri, Claudia De Pasquale, Guido Ferlazzo, Maria Giovanna Rizzo, Marco Sebastiano Nicolo, Salvatore Guglielmino, Concetta Gugliandolo
Summary: This study evaluated the ability of the exopolysaccharide B3-15 to prevent the adhesion and biofilm formation of Pseudomonas aeruginosa and Staphylococcus aureus. The EPS was effective in preventing bacterial adhesion during the initial attachment phase but had no effect on mature biofilms. Additionally, it downregulated the expression of adhesion-related genes and reduced bacterial adhesion on human epithelial cells.
Article
Chemistry, Applied
Longzhan Gan, Guangyang Jiang, Xiaoguang Li, Shihao Zhang, Yongqiang Tian, Biyu Peng
Summary: EPS-B108, a fructose-based exopolysaccharide isolated from halotolerant Bacillus sp. SCU-E108, exhibits no acute oral toxicity, good thermal stability, high solubility in water, and excellent oil-holding capacity. Its properties make it a promising alternative source for functional food additives and ingredients.
Article
Biochemistry & Molecular Biology
Fengshu Li, Xin Hu, Liying Qin, Haoshuai Li, Yan Yang, Xiuli Zhang, Jinren Lu, Yiming Li, Mutai Bao
Summary: A novel EPS was isolated from Bacillus sp. QDR3-1 and its structure and repair ability against UVR-mediated cell damage were studied. The results showed that EPS-M1 had good biocompatibility and could mitigate UVR-mediated cell damage.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Microbiology
Xin Hu, Hongrui Fu, Mutai Bao, Xiuli Zhang, Wei Liu, Xiaojun Sun, Yaping Pan
Summary: The study focused on the differences in composition and properties of low temperature exopolysaccharides (LT-EPS) and normal temperature exopolysaccharides (NT-EPS) mediated by Bacillus sp. ZT-1. It revealed distinct characteristics in terms of chemical composition, viscosity, and emulsification properties between LT-EPS and NT-EPS.
MICROBIOLOGICAL RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Kan Shi, Wei An, Qiang Meng, Yajing Gu, Shuwen Liu
Summary: This study focused on characterizing the EPS produced by O. oeni 28A-1, revealing its composition, structure, thermal stability, and lyoprotective ability. The results showed that the EPS exhibited irregular lamellar structure, dispersed particle structure in solution, and great potential as a natural lyoprotectant for O. oeni.
PROCESS BIOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Samy Selim, Mohammed S. Almuhayawi, Mohanned Talal Alharbi, Mohammed K. Nagshabandi, Awadh Alanazi, Mona Warrad, Nashwa Hagagy, Ahmed Ghareeb, Abdallah S. Ali
Summary: A strain of Bacillus cereus isolated from the Saudi Red Sea coast produced an exopolysaccharide (EPSR3) with antioxidant, antitumor, and anti-inflammatory activities. EPSR3 also showed potential against methicillin-resistant Staphylococcus aureus and coagulase-negative staphylococci.
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)